package bf.program.command.ext;

import org.objectweb.asm.MethodVisitor;

import bf.program.Command;
import bf.program.State;

public class PointerAdd extends Command {

	int value;
	
	public PointerAdd(int value) {
		super();
		this.value = value;
	}

	@Override
	public void execute(State state) {
		state.PADD(value);
	}

	@Override
	public void genCode(MethodVisitor mv) {
		mv.visitVarInsn(ALOAD, 0);
		switch(value) {
		case 0:
			mv.visitInsn(ICONST_0);
			break;
		case 1:
			mv.visitInsn(ICONST_1);
			break;
		case 2:
			mv.visitInsn(ICONST_2);
			break;
		case 3:
			mv.visitInsn(ICONST_3);
			break;
		case 4:
			mv.visitInsn(ICONST_4);
			break;
		case 5:
			mv.visitInsn(ICONST_5);
			break;
		default:
			mv.visitIntInsn(BIPUSH, value);
			break;
	}
		mv.visitMethodInsn(INVOKEVIRTUAL, "bf/program/State", "PADD", "(I)V");
	}

}
